671272543338 has 16 divisors (see below), whose sum is σ = 1342594167840. Its totient is φ = 223749334256.

The previous prime is 671272543309. The next prime is 671272543351. The reversal of 671272543338 is 833345272176.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1866045 + ... + 2196512.

It is an arithmetic number, because the mean of its divisors is an integer number (83912135490).

Almost surely, 2^671272543338 is an apocalyptic number.

671272543338 is an abundant number, since it is smaller than the sum of its proper divisors (671321624502).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671272543338 is a wasteful number, since it uses less digits than its factorization.

671272543338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4090101.

The product of its digits is 5080320, while the sum is 51.

The spelling of 671272543338 in words is "six hundred seventy-one billion, two hundred seventy-two million, five hundred forty-three thousand, three hundred thirty-eight".